Conners 4 is a well-validated and trusted tool that provides a comprehensive evaluation of ADHD and continues to evolve with new research.
Conners 4th Edition (Conners 4™) is the highly anticipated revision of the Conners 3rd Edition (Conners 3®), the world's leading Attention-Deficit/Hyperactivity Disorder (ADHD) assessment.
Conners 4 provides a comprehensive assessment of symptoms and impairments associated with ADHD and common co-occurring problems and disorders in children and youth aged 6 to 18 years. The Conners 4 is an inclusive and fair measure that builds on the long history and strengths of the multi-informant Conners Rating Scales. Conners 4 will be an invaluable part of your ADHD assessment battery with updated norms, improved workflows, and new and improved features.
Improved Efficiency and Usability
Now fully digital, Conners 4 helps you gain valuable time with customizable reports, online scoring for better data visualization, easy inventory management, a digital manual, and printable forms.
Increased Accuracy of Assessment
Conners 4 updates allow you to:
Address critical concerns with Severe Conduct and Self-Harm Critical Items and a Sleep Problems Indicator
Measure impairments related to ADHD symptoms in the school, social, and family domains
Evaluate new content areas and common co-occurring problems such as emotional dysregulation, depressed mood, and anxious thoughts
Apply a dimensional approach with an additional DSM Symptoms Scale - Total ADHD Symptoms
Superior Quantification of Severity
Conners 4 helps you evaluate the severity of symptoms by comparing the child's results to an ADHD Reference Sample (children/youth already diagnosed with ADHD).
Enhanced Collaboration with Parents
Conners 4 facilitates collaboration with parents using an enhanced Parent Feedback Handout (easy-to-understand explanation and summary of results).
Increased Fairness and Inclusivity
Conners 4 improves fairness and inclusivity with gender-inclusive language, culturally sensitive items, and items and scales that show no evidence of measurement bias regarding gender, race/ethnicity, country of residence, or parental education level.
More Informed Intervention
Conners 4 allows evaluation of a youth's relative strengths and weaknesses using Within-Profile Comparisons for more informed intervention.
Take the guesswork out of your inventory management with a new way to order Conners 4 uses. You can purchase a general Conners 4 use and apply it across any Conners 4 form while generating reports.
Key Areas Measured
Key Areas Measured
Parent and Teacher: 6–18 years
Self-Report: 8–18 years
1 to 25 minutes
Number of Items
Conners 4 Parent: Full Length, 117; Short, 53
Conners 4 Teacher: Full Length, 109; Short, 49
Conners 4 Self-Report: Full Length, 118; Short, 51
Conners 4 ADHD Index Parent, Teacher, and Self-Report: 12
This form is the most comprehensive and is recommended for use in initial evaluations and full re-evaluations. This form includes all Conners 4 items and scales.
This form is useful when a rater has limited time, or when the rater will be asked to complete the Conners 4 repeatedly (e.g., monthly assessment of treatment response). This form takes less time to complete than the full-length form but is not as comprehensive because it has fewer scales and fewer items per scale (for both Content and Impairment & Functional Outcome scales).
Conners 4–ADHD Index:
This index can be used as a screener to determine which youth are most likely to require a more comprehensive evaluation. The Conners 4–ADHD Index contains 12 items from the full-length form that best differentiate youth diagnosed with ADHD from youth in the general population.
Single Rater Report:
Provides detailed information about scores from a single administration, presented numerically, graphically, and within an interpretive summary. A youth’s scores are compared to those in one or more Normative Samples, and optionally, to an ADHD Reference Sample. Also includes a Within-Profile Comparison of the youth’s results to their own average score. Elevations at both the scale and item level are included. Key results are provided in a one-page overview.
The Conners 4 Parent, Teacher, and Self-Report scale have excellent internal consistency (median omega coefficient = .94), strong test-retest reliability (median r = .89), and moderate to strong inter-rater reliability (median r = .84 for two parent raters; median r = .52 for two teacher raters).
Results from confirmatory factor analyses (CFA) provided evidence to support the structure of the Conners 4 scales (6-factor model for the Content Scales [CFI ≥ .940, RMSEA ≤ .051]) and 3-factor model for Parent and Self-Report and 2-factor model for Teacher for the Impairment & Functional Outcome Scales [CFI ≥ .935; RMSEA ≤ .094]).
Evidence to support the convergent validity of the Conners 4 was found, given the moderate to very strong correlations between the Conners 4 and established assessments measuring related constructs (median |r| across four convergent validity studies = .73.
The Conners 4 also demonstrated a high degree of criterion-related validity, as various clinical groups had distinctly different profiles of scores. Ratings of youth with ADHD yielded higher scores than ratings of both youth from the General Population (median Cohen’s d for significant differences: Parent = 1.51, Teacher = 0.87, Self-Report = 0.77) and youth with Depression or Anxiety (median Cohen’s d for significant differences: Parent = 0.88, Teacher = 0.49, Self-Report = 0.57). Furthermore, endorsement of Self-Harm Critical Items and the Sleep Problems Indicator Items from ADHD groups was higher than the General Population groups. Additionally, unique symptom profiles of Conners 4 scores were observed for ADHD Inattentive, ADHD Hyperactive/Impulsive, and ADHD Combined presentation groups (e.g., scores on scales related to hyperactivity and impulsivity tended to be higher in the ADHD Hyperactive/Impulsive and ADHD Combined groups than the ADHD Inattentive group).
There is strong evidence that the Conners 4 meets or exceeds the fairness requirements outlined in the Standards for Educational and Psychological Testing (AERA, APA, & NCME, 2014). When investigating differences by gender, race/ethnicity, country of residence, and parental education levels, there was (a) no evidence of meaningful measurement invariance in the factor models, (b) no evidence of meaningful differential test functioning between groups, and (c) negligible to small differences in average test scores between groups (median |d| = .07).
Updated normative data was derived from a large sample designed to be representative of the North American population (based on the U.S. and Canadian census figures), stratified based on age, gender, race/ethnicity, parental education level, and geographic region. A total of 3,120 youth were included in the Normative Samples (N = 1,560 for Parent; N = 1,560 for Teacher; and N = 1,100 for Self-Report). Combined gender norms are provided for youth in 1-year age intervals; separate norms for males and females are also available. ADHD Reference Samples are also available (N = 560 for Parent, N = 321 for Teacher, and N = 229 for Self-Report).
Conners 4 Introduction and Application On-Demand Training
MHS provides an optional Conners 4 On-Demand Training with 1.25 CE/CPD credits available. Join Product and Solutions Manager Mathangi Selvamenan, Ph.D., and Assessment Consultant Janelle C. Bierdeman, Ed.S. NCSP, for an introduction to the brand new Conners 4th Edition. Mathangi will review a background of ADHD assessment, and an overview of the Conners 4’s modified and expanded feature set, including updated standardization, reliability, validity and fairness considerations. Janelle will then move on to administration, scoring and interpretation guidelines, concluding with an example case study.
This is an 80 minute intermediate level training (fundamental knowledge of ADHD and Conners assessment is recommended).
By the end of this training video, you will be able to:
Describe the best practices for a thorough assessment of ADHD
Discuss the key features of the Conners 4, including its modified structure and content
Outline the development considerations and psychometric properties of the Conners 4
Identify the user requirements for the administration and scoring of the test
Interpret Conners 4 results to guide decision making and intervention planning
Multi-Health Systems Inc. (MHS Inc.) is approved by the American Psychological Association to sponsor continuing education for psychologists. MHS Inc. maintains responsibility for this program and its content.
Multi-Health Systems Inc. (MHS Inc.) is approved by the National Association of School Psychologists to offer professional development for school psychologists. MHS Inc. maintains responsibility for the program. NASP Approved Provider # 1119.
There is no known commercial support for this program.
All Conners 4 users receive access to a free, digital version of the Conners 4 Manual through their MHS Online Assessment Center+ account.
A printed version of the Conners 4 Manual is also available for purchase below.
Assess easily online from anywhere. Includes automatic scoring and report generation.
Requires software. Includes automatic scoring and report generation.
QuikScore forms are scored by hand without reports.